本文对空间槽轮机构进行运动分析和力矩分析，并建立了它们之间的方程式。通过对比说明空间槽轮机构的性能要比平面槽轮机构好。另外，这种机构结构比较合理，与功能相同的其它形式的机构相比这种机构价廉，且有发展潜力 In this paper, the spatial analysis of sheave mechanism and torque analysis, and establish the equation between them. By contrast shows that the performance of the space sheave mechanism is better than the flat sheave mechanism. In addition, the structure of this mechanism is reasonable, which is cheaper and has more potential for development than other types of mechanisms of the same function